вроде все правильно , не вижу ошибке в алгоритме.
кто подскажет в чем проблема?
package com.javarush.task.task19.task1916;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
/*
Отслеживаем изменения
*/
public class Solution {
public static List<LineItem> lines = new ArrayList<LineItem>();
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String file1 = reader.readLine();
String file2 = reader.readLine();
reader.close();
BufferedReader bufferedReader1 = new BufferedReader(new FileReader(file1));
BufferedReader bufferedReader2 = new BufferedReader(new FileReader(file2));
List<String> list1 = new ArrayList<>();
List<String> list2 = new ArrayList<>();
while (bufferedReader1.ready()) {
list1.add(bufferedReader1.readLine());
}
bufferedReader1.close();
while (bufferedReader2.ready()) {
list2.add(bufferedReader2.readLine());
}
bufferedReader2.close();
int j = 0;
int stepUp = 0;
for (int i = 0; i < list1.size(); i++) {
stepUp = j + 1;
if (stepUp >= list2.size()) stepUp = list2.size() - 1;
if (j >= list2.size()) j = list2.size() - 1;
if (list1.get(i).equals(list2.get(j))) {
lines.add(new LineItem(Type.SAME, list1.get(i)));
j++;
} else if ((stepUp!= j)&&(list1.get(i).equals(list2.get(stepUp)))) {
lines.add(new LineItem(Type.ADDED, list2.get(j)));
j++;
i--;
} else {
lines.add(new LineItem(Type.REMOVED, list1.get(i)));
}
}
for (int i = 0; i < lines.size(); i++) {
System.out.println(lines.get(i).toString());
}
}
public static enum Type {
ADDED, //добавлена новая строка
REMOVED, //удалена строка
SAME //без изменений
}
public static class LineItem {
public Type type;
public String line;
public LineItem(Type type, String line) {
this.type = type;
this.line = line;
}
public String toString() {
return this.type + " " + this.line;
}
}
}